Home / 20,968.88-28,938.06-13,013.73

Finding the Fourth Proportional to 20,968.88, 28,938.06 and 13,013.73

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Solution

The fourth proportional to 20,968.88, 28,938.06 and 13,013.73 is: 17,959.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.88 : 28,938.06 = 13,013.73 : x
  2. Step 2: Convert to fraction form
    20,968.88/28,938.06 = 13,013.73/x
  3. Step 3: Cross multiply
    20,968.88x = 28,938.06 × 13,013.73
  4. Step 4: Simplify right side
    20,968.88x = 376,592,099.56
  5. Step 5: Solve for x
    x = 376,592,099.56/20,968.88
  6. Step 6: Final answer
    x = 17,959.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.